.page-contact {
  --c-gap: 20px;
  --c-shadow: rgba(16, 24, 32, 0.72);
  padding-bottom: 64px;
  color: var(--text);
}

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  margin-top: 22px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-contact .crumbs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .crumbs-item + .crumbs-item::before {
  content: "/";
  margin-right: 6px;
  color: var(--line);
}

.page-contact .crumbs-item a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-contact .crumbs-item a:hover,
.page-contact .crumbs-item a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-contact .crumbs-item[aria-current="page"] {
  color: var(--text);
}

/* ---------- 页头 ---------- */
.page-contact .c-head {
  margin-top: 26px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.page-contact .c-eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--violet);
}

.page-contact h1 {
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.page-contact .c-lede {
  margin: 18px 0 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .c-headbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 区块通用 ---------- */
.page-contact .c-block {
  margin-top: 48px;
}

.page-contact .c-block-head {
  padding-bottom: 4px;
}

.page-contact .c-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-contact .c-sub {
  margin: 12px 0 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channels {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 22px 20px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color 120ms var(--ease), transform 120ms var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--signal);
  transform: translateY(-2px);
}

.page-contact .channel-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--violet);
  transition: color 120ms var(--ease);
}

.page-contact .channel-card:hover .channel-num {
  color: var(--signal);
}

.page-contact .channel-name {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.35;
}

.page-contact .channel-value {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.55;
  color: var(--haze);
  word-break: break-word;
}

.page-contact .channel-use {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .channel-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 20px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 渠道信息板 ---------- */
.page-contact .channel-visual {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

.page-contact .c-figure {
  margin: 0;
}

.page-contact .c-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}

.page-contact .c-figure .media-caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .channel-notes {
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--signal);
  background: rgba(255, 122, 41, 0.05);
}

.page-contact .channel-notes-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 15px;
  color: var(--text);
}

.page-contact .channel-notes-list {
  display: grid;
  gap: 12px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel-notes-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .channel-notes-list .dot {
  flex: none;
  margin-top: 8px;
}

/* ---------- 流程横带 ---------- */
.page-contact .flow {
  display: grid;
  gap: 22px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow-step {
  position: relative;
  padding-left: 34px;
}

.page-contact .flow-node {
  position: absolute;
  top: 6px;
  left: 0;
  width: 14px;
  height: 14px;
  background: var(--ink);
  border: 1px solid var(--line);
  transition: border-color 120ms var(--ease), background-color 120ms var(--ease);
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  top: 20px;
  bottom: -22px;
  left: 6px;
  width: 1px;
  background: var(--line);
}

.page-contact .flow-step:last-child::before {
  display: none;
}

.page-contact .flow-step:hover .flow-node {
  border-color: var(--signal);
  background: var(--signal);
}

.page-contact .flow-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--violet);
}

.page-contact .flow-title {
  margin: 6px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.4;
  color: var(--text);
}

.page-contact .flow-text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .flow-eta {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--muted);
  opacity: 0.6;
  transition: opacity 120ms var(--ease), color 120ms var(--ease);
}

.page-contact .flow-step:hover .flow-eta {
  opacity: 1;
  color: var(--teal);
}

/* ---------- 合作与收录申请 ---------- */
.page-contact .c-block--coop {
  padding: 26px 20px 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--on-amber);
}

.page-contact .c-block--coop .c-title {
  color: var(--on-amber);
}

.page-contact .c-block--coop .c-sub {
  color: var(--c-shadow);
}

.page-contact .coop-list {
  display: grid;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .coop-item {
  position: relative;
}

.page-contact .coop-check {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.page-contact .coop-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(16, 24, 32, 0.18);
  font-size: 14px;
  line-height: 1.7;
  color: var(--on-amber);
  cursor: pointer;
  transition: background-color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-contact .coop-mark {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1px solid var(--on-amber);
  transition: background-color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-contact .coop-check:focus-visible + .coop-label {
  outline: 3px solid var(--signal);
  outline-offset: 2px;
}

.page-contact .coop-check:checked + .coop-label {
  background: var(--haze);
  border-color: var(--signal);
}

.page-contact .coop-check:checked + .coop-label .coop-mark {
  background: var(--signal);
  border-color: var(--signal);
}

.page-contact .coop-check:checked + .coop-label .coop-mark::after {
  content: "";
  position: absolute;
  top: 1px;
  left: 4px;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--on-amber);
  border-bottom: 2px solid var(--on-amber);
  transform: rotate(45deg);
}

.page-contact .coop-check-note {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid rgba(16, 24, 32, 0.22);
}

.page-contact .coop-check-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 16px;
  color: var(--on-amber);
}

.page-contact .coop-check-note ul {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .coop-check-note li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-shadow);
}

.page-contact .coop-check-note li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 8px;
  height: 8px;
  border: 1px solid var(--violet);
}

/* ---------- 地域装饰带 ---------- */
.page-contact .region-band {
  position: relative;
  margin-top: 26px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background-image:
    repeating-linear-gradient(90deg, rgba(31, 199, 166, 0.07) 0 2px, transparent 2px 22px),
    repeating-linear-gradient(0deg, rgba(255, 122, 41, 0.05) 0 2px, transparent 2px 22px);
}

.page-contact .region-band img {
  display: block;
  width: 100%;
  height: auto;
  opacity: 0.62;
}

.page-contact .region-band-note {
  margin: 0;
  padding: 10px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 相关链接行 ---------- */
.page-contact .c-linkline {
  margin: 30px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 2;
  color: var(--muted);
}

.page-contact .c-linkline a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-contact .c-linkline a:hover,
.page-contact .c-linkline a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-contact .channels {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-contact .channel-card:nth-child(2) {
    margin-top: 28px;
  }

  .page-contact .channel-card:nth-child(3) {
    margin-top: 56px;
  }

  .page-contact .coop-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .page-contact .coop-list .coop-item:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact h1 {
    font-size: 40px;
    line-height: 1.15;
    max-width: 22ch;
  }

  .page-contact .c-block {
    margin-top: 64px;
  }

  .page-contact .c-title {
    font-size: 26px;
    line-height: 1.32;
  }

  .page-contact .c-block--coop {
    padding: 34px 36px 36px;
  }

  .page-contact .channel-visual {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: 32px;
  }

  .page-contact .flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 32px;
  }

  .page-contact .flow-step {
    padding-left: 0;
    padding-top: 34px;
  }

  .page-contact .flow-node {
    top: 0;
    left: 0;
    width: 16px;
    height: 16px;
  }

  .page-contact .flow-step::before {
    top: 8px;
    bottom: auto;
    left: 16px;
    right: -24px;
    width: auto;
    height: 1px;
  }

  .page-contact .region-band-note {
    text-align: right;
  }
}

@media (min-width: 1180px) {
  .page-contact .channels {
    gap: 24px;
  }

  .page-contact .channel-card {
    padding: 26px 24px 28px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within {
    transform: none;
  }

  .page-contact .channel-card,
  .page-contact .channel-num,
  .page-contact .flow-node,
  .page-contact .flow-eta,
  .page-contact .coop-label,
  .page-contact .coop-mark,
  .page-contact .crumbs-item a,
  .page-contact .c-linkline a {
    transition: none;
  }
}